[Libva] [PATCH v2 intel-driver 3/8] surface: fix vaDeriveImage() for grayscale.

[Zhao, Yakui]

On Wed, 2014-05-14 at 07:13 -0600, Gwenole Beauchesne wrote:
> Allow vaDeriveImage() to work with grayscale surfaces by only exposing
> the luma component.
> 

This is not necessary as the DeriveImage already supports the Y800
fourcc.

> Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne at intel.com>
> ---
>  src/i965_drv_video.c |    6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/src/i965_drv_video.c b/src/i965_drv_video.c
> index 589c00c..495ad44 100755
> --- a/src/i965_drv_video.c
> +++ b/src/i965_drv_video.c
> @@ -3222,6 +3222,12 @@ VAStatus i965_DeriveImage(VADriverContextP ctx,
>      image->format.bits_per_pixel = 12;
>  
>      switch (image->format.fourcc) {
> +    case VA_FOURCC_Y800:
> +        image->num_planes = 1;
> +        image->pitches[0] = w_pitch; /* Y */
> +        image->offsets[0] = 0;
> +        break;
> +
>      case VA_FOURCC_YV12:
>          image->num_planes = 3;
>          image->pitches[0] = w_pitch; /* Y */